3 in. PVC core diameter bore brush. Hand or machine operated designed to clean both the wall and the bottom of a hole when a spiral brush is not strong or thick enough to provide sufficient abrasion. The tap is 1/2-13 UNC.

California Proposition 65 WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling and Consult with your physician before using this product.